Clip-on heat sink for an electronic device



FIG. 1 is a top, front perspective view of a clip-on heat sink for an electronic device showing my new design, the electronic device being shown in broken lines for illustrative purposes and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a right side elevation thereof;

FIG. 6 is a rear elevation thereof; and

FIG. 7 is a front elevation thereof.

FIG. 8 is a top, front perspective view of a clip on heat sink showing my new design. 

The ornamental design for a clip-on heat sink for an electronic device, as shown and described. 